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Solid Model in IGES format ....

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  • Solid Model in IGES format ....

    Hi everyone;
    Thanks for all who responded to my question, I appreciate your prompt
    response. I am posting a summary of the helpful responses. For the software
    suggested by some, like materialise and geomagic, these are very expansive and
    we can afford it, I apprecaiate if anyone has it would volunteer to convert the
    CT files for me. The only software I may be able to have access to is ANALYZE
    which I will try to apply the advices sent to me.
    I will also post the result of any trial that works based on any of the
    suggestions given.

    I had experience in this field about my thesis for importing
    MRI images in IGES format to ANSYS. I just know that I could
    import 2D sections to ANSYS.
    You can do this by importing 2d sections of your images to
    Autocad Ver. 12 and by exporting IGES files to ANSYS you must
    define all curves, surfaces and volumes and ....

    If you have additional information I will help you encouragely.

    Alireza Jalayer Alireza
    Plamen Raykov


    What you might like to do is try using a software program called AMIRA. This
    code can be downloaded on trial from their web page ( and can be
    used to both segment the CT data and then use these contours to generate a
    surface mesh of the anatomy.

    Let me know how it goes,

    Andrew Andrew Hopkins

    Hi Azza
    I am sending you 4 slides that I will refer to.
    I f you are creating only one model than automatic
    detection technique would be wasting of time to try to
    get it working.

    You can download Scion Image for free from the
    Internet. Outline edges like on the slide. Use less
    points than on the picture. Record x-y coordinates of
    the points. Each cross section has to consist of two
    splines in order to use ASKIN command. So you draw 2
    vertical lines, one in the tibia and one on the
    fibula. These have to be at a constant distance from
    the left edge so that when you create volume, the
    volume will be nice and not crooked.
    Then, I used MATLAB to read these coordinates and
    write code for ANSYS.

    I'll try to explain the sequence on a file
    "Fibula_prog_S2000.m". (Note that I wrote it first for
    Talus). So let say you outlined all your cross
    sections and saved them so that the z-coordinate is in
    the name of the file and one of your files is called
    "can_f98.txt" (98 means z=98mm). You create a list of
    all your cross sections in "Fibula_list.txt". Then you
    can run the "Fibula_prog_S2000.m" program that will
    write commands for ANSYS and create a separate file
    for each cross section "cs_fib#.inp" and write one
    file "Fibula_S2000.inp" that you can run in ANSYS and
    it will stack all your cross sections.
    The femur was created from imported IGES cross
    The original cross section were all parallel, creating
    problems in the bifurcation. I was not able to create
    volumes. So I recut areas under an angle (slide3).
    Once you create volumes only cross sections outlining
    the volumes are kept, the internal ones are deleted.
    So you actually see outlines of 4 volumes.

    Hope it helps. You most probably will have more

    Karol Galik

    Dr. Mahmoud,

    I had the same problem and something is still unclear.

    I use ANALYZE AVW v3.0 to handle CT data. This software can generate
    surface model and output in IGES format. Actually, it is partly IGES
    file since only 'point cloud' are included in the output file. I tried
    ANSYS student version but it can not read it. I do not know whether the
    commercial version works. Please try it if you can. If it works, please
    let me know.

    Linping Zhao

    Hi Azza,

    Materialise software will do that. Visit

    Good luck!

    Rajshree Mootanah
    Bioengineering Research Group - DaCS
    Anglia Polytechnic University
    CM1 1LL
    Tel: (44) 1245 493131 ext 3316 / 3028
    Fax: (44) 1245 252646
    Raj Mootanah

    Go check out
    And the Medical link to Mimics. I think that will be of interest to you.

    Mimics interfaces between scanner data (CT, MRI, Technical scanner,...)
    and Rapid Prototyping, CAD or Finite Element analysis. The Mimics software
    is an image-processing package with 3D visualisation functions that
    interfaces with all common scanner formats.

    And I'm almost sure it works with ANSYS.

    Hope that helps.

    Priya Radhakrishnan
    University of Illinois at Chicago
    Hi Azza,

    I've done what you're suggeting below... I used software from to build a triangular surface mesh of the bone and then
    use AutoCad to convert this from .stl format to IGES format - this imports
    straight into Ansys...

    Hope this helps,

    Goodwin Lawlor

    Dear Dr. Azza Mahmoud,

    please, consult the following address:

    Perhaps this software can be useful in your work.

    Best Regards,
    AACD - Laboratorio de Marcha
    I don't have the software, but I suggest you contact David B. Thomas
    Marketing Communications Manager

    tell him you are a local researcher at NCSU and that you have an infrequent
    need for their type of geometry translation,
    but that you would be willing to cooperate on a GEOMAGIC case study or
    testimonial on your project if
    they would help.
    I would think that he might be willing to do it for free in-house if it led
    to a marketing opportunity!

    also, let me know what type of data do you have ?
    surface point clouds, or is it a tessellated surface of triangles or
    rectangles ??


    Michael W. Hiller
    In2 Solutions, Inc.

    Azza Mahmoud, Ph.D.
    Department of Clinical Sciences
    School of Veterinary Medicine, NCSU
    Box 8401, Raleigh, NC
    Tel: (919) 513-6376
    E-mail: ---------------------------------------

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